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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 361 | function populate_options( array $options = array() ) { |
| 362 | global $wpdb, $wp_db_version, $wp_current_db_version; |
| 363 | |
| 364 | $guessurl = wp_guess_url(); |
| 365 | /** |
| 366 | * Fires before creating WordPress options and populating their default values. |
| 367 | * |
| 368 | * @since 2.6.0 |
| 369 | */ |
| 370 | do_action( 'populate_options' ); |
| 371 | |
| 372 | if ( ini_get( 'safe_mode' ) ) { |
| 373 | // Safe mode can break mkdir() so use a flat structure by default. |
| 374 | $uploads_use_yearmonth_folders = 0; |
| 375 | } else { |
| 376 | $uploads_use_yearmonth_folders = 1; |
| 377 | } |
| 378 | |
| 379 | // If WP_DEFAULT_THEME doesn't exist, fall back to the latest core default theme. |